The largest and the second largest phylum of the animal kingdom are

(1) Arthropoda and Echinodermata

(2) Echinodermata and Mollusca

(3) Mollusca and vertebrata

(4) Arthropoda and Mollusca

Which of the group of animals is triploblastic, coelomate and bilateral?

(1) Aschelminthes

(2) Porifera

(3) Arthropoda

(4) Ctenophora

Which of the following is not a feature of the phylum chordata?

1. Dorsal heart

2. Central nervous system is dorsal

3. Paired pharyngeal gill slits

4. Post anal tail

The presence of notochord in the larval tail is a characteristic of

(1) Doliolum

(2) Branchiostoma

(3) Balanoglossus

(4) Petromyzon

Match the following:

1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
3. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
4. (a)-(iii), (b)-(iii), (c)-(ii), (d)-(i)

Which of the following animal has a diploblastic level of organisation?

(1) sponges

(2) Adamsia

(3) Ctenoplana

(4) both (2) and (3)

Development involves an indirect or larval form in which of the following?

(1) Pleurobrachia

(2) Euspongia

(3) both (1) and (2)

(4) none of the above

A sessile, cylindrical and radial symmetrical life form is found in

1. Hydra

2. Obelia

3. Adamsia

4. all of the above

Physalia is a coelenterate which is also known as

(1) sea pen

(2) sea fan

(3) Portuguese man of war

(4) sea anemone

Which of the following is wrong about Coelenterata?

(1) They are aquatic and exclusively marine animals.

(2) Cnidarians exhibit tissue level of organisation and are diploblastic.

(3) Some Cnidarians exhibit two forms namely Polyp and Medusa.

(4) Cnidoblasts are present on tentacles and body.